Improvement in the hydro pneumatic lamp



UNITED STATES STEPHEN S. LEE, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN THE HYDRO PNEUMATIC LAMP.

Specification forming part of Letters Patent No. 2,570, dated April 21, 1842.

To all whom it may concern} vented a new and improved mode of clearing the lower air-chamber of oil in the hydropneumatic lamp, to be called Lees Improved Hydrostatic Lamp; and Ido declare that the followingis a full and exact description of the same, reference being had to the annexed drawings of the same, making part of this specification, of which 7 Figure 1 is an elevation. Fig. 2 is a vertical section.

The nature of myinvention consists in providing a method of emptying the air-chamber D by a siphon -faucet or any other discharging apparatus without inverting the lamp, as has always been necessary in using lamps constructed'on this principle.

To enable others skilled in the art to use my invention I will proceed to describe its construction and operation.

I make a siphon or faucet (or some aperture) similar to that shown in the drawings at e and f, by which the air-chamber D is emptied of oil byturning faucet F to the dotted lines 0.

I will now specify all the parts and their operations.

A is a chamber which contains the oil for consumption; B, the chamber containing the oil for producing equilibrium.

0 is a waste-chamber for the waste oil; D, an air-chamber.

a is a plug which closes the pipe m, said pipe at having a lateral aperture at p, by

which chamber A is filled by the oil flowing through said aperture when chamber B is filled.

m is a pipe which leads down through chamber A, and by which chamber B is filled.

n is a pipe connecting chambers B and D, and empties into socket d through the valve 0.

i is a pipe leading from the outer top of chamber A into chamber 0.

k is an air-pipe leading from the outer top of chamber A nearly to the bottom of chamber B.

Z is a pipe leading from chamber D up into chamber A and covered by the hood I). The hood b is a piece of pipe double the diameter of the pipe Z it covers. It is three-fourths-of an inch long, covered at top, and extends to within one-fourth of an inch of the bottom of chamber A. It, is like an inverted thimble and placed over the top of the pipe Z, which, being filled with air, prevents the oil from running into chamber D through pipe Z.

c is a siphon, which empties chamber D by the faucet f, which forms the long arm of the siphon when turned down, as represented by the dotted lines 0.

g is a knob or small handle by which to turn the faucet f.

his a'pipe leading from the bottom of chamber A and joins the wick-socket H. By this pipe the oil is carried up through the aperture 8 into the wick-socket 'H and supplies the flame.

G is a knob, by the turning of which the wick is raised or lowered.

F is a glass chimney resting on gallery K.

E isa glass shade resting on gallery I.

I is a gallery, which is formed in the following manner: A piece of cylindrical pipe is made to fit the wick-socket H, another piece of pipe sufficiently large to fit the glass chimney is attached, and the two are attached together, the smaller within the larger, by three thin arms of tin or brass, so as to obstruct the passage of the air between the two as little as possible.

The operation: Remove shade E, chimney F, and the gallery I; take out the plug a, which movement of taking out the plug closes the pipe n by valve 0, (or by aspiral spring in the socket (1,) by wire 1",- pour the oil moderately into pipe m until it rises and flows out at the lateral aperture 10, near the top of it, which operation fills chambers A and B, and also pipe n as far as the valve 0. Then replace the plug, which simultaneously opens valve 0, and the oil flows down from chamber B and fills the socket d, which flows over into chamber D and ,expels a portion of air, which as cends through pipe Z and hood 12 into chamber A, which drives a supply of oil up pipe h through apertures to the summit of the wicksocket H, which is continually and uniformly resupplied byalike quantity descending from chamber B, through valve 0', and overflowing socket d into chamber D, and'expelling a por tion ofairinto chamber A, as before described,

the pressure of which upon the oil in that chamber causes a supply to rise to the wick in socket H, and continues the supply until chamber A is exhausted, during which time the oil in chamber B has descended through valve 0 into chamber D, and the lamp goes out; but the lamp may be extinguished in the usual manner before chamber A is exhausted and again relighted, and it will-burn until chamber A is exhausted. Now, to refill the lamp, the funnel fmust be turned down by the knob g to the dotted line 0, thus making the long arm of the siphon e, which empties chamber D, anditagain becomes the air-cham- STEPHEN S. LEE.

Witnesses:

E. J. MALLETT, A. H. OKIE. 

